6.3 Periodic Trends
Terms in this set (19)
What is atomic Radii
distance between the nucleus and the edge of the outer orbital of an atom.
What is ionization energy?
Amount of energy needed to remove an electron from an atom in its ground state
What is electron affinity/electronegativity?
measure of an atoms ability to attract electrons from another atom
Which of the following elements has the SMALLEST atomic radius?
Which element has the LOWEST ionization energy?
Which element has the HIGHEST electronegativity?
_ tend to have the highest electronegativity values.
Atomic radius increases from left to right across the table as the atomic number increases.
Choose which of the following correctly orders the DECREASING electronegativity of the given elements in Group 15?
Bi = As = P = N
Bi > Sb > P > N
N > As > P > Bi
N > P > As > Sb
N > P > As > Sb
What is the guiding variable for a period trend?
the size of the nucleus, which changes by the number of protons
What is the guiding variable for a group trend?
The number of electron shells
Magnesium and Calcium are part of what group? Which has a larger atomic radius?
Alkaline Earth Metals, Calcium (more electron shells)
Which element has a higher ionization energy, calcium or magnesium?
Magnesium, less shells give it more control
Which element has a higher electronegativity, Magnesium or Calcium?
Magnesium, less shells give it more exposure
Does Fluorine or Nitrogen have a larger radius?
Nitrogen, less protons
Order these elements in increasing atomic radii: Titanium, Carbon, Neon, Sulfur, Cesium
Neon, Sulfure, Carbon, Titanium, Cesium
Place these elements in increasing ionization energy: Beryllium, Boron, sodium, Chlorine, Lithium.
Sodium, Lithium, Beryllium, Boron, Chlorine
Place the elements in increasing electronegativity: Fluorine, Potassium, Hydrogen, Carbon, Chlorine
Potassium, Hydrogen, Carbon, Chlorine, Fluorine
Moseley corrected Mendeleev's organization how?
He placed the elements in order of atomic number, rather than atomic mass.
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